Improvement in sash-holders



n. R. BALL. Improvement in Sash Holders.

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@f2/igea@ PATENT OFFICE.

ROBERT B. BALL, OF WEST MEBIDEN, CONNECTICUT.

IMPROVEMENT IN SASH-HOLDERS.

Speciiication forming part of Letters Patent No. 123,141, dated January 30, 1872.

Specification describing certain Improvements in Sash-Locks, invented by ROBERT R. BALL, of West Meriden, in the county of New Haven and State of Connecticut.

My invention has for its object improvement in sash-locks of the class in which a gravity-bolt is employed, the same being provided with a thumb-piece, projecting through a slot in its case, whereby it may be raised. The invention consists in a peculiar construction and arrangement of parts, whereby there is no exposure or projection of the thumb-piece of the bolt through the slot of the case. A plate is provided within the case to form, in connection with a lug, a guide for the bolt, and also constitute a tioor for the slot, or made to cover and conceal the wood beneath, as hereinafter fully described.

In the accompanying drawing, Figure l represents a face view, partly in section, of my improved sash-lock applied to a windowsash. Fig. 2 is a view of the reverse side of the lock detached. Fig. 3 is a section of Fig. 2 on the line m Fig. 4 is a cross-section of the lock taken on the line y y of Fig. 2.

A s the lock-plate. B is the sliding bolt. The plate in its outline is of D-t'orm., covering something more than a half circle, bounded by a flange, C. The circle is described from the center of the orifice l), which is the hole for the fastening-screw E. The circular lockplate is not one continuous plate, but it is formed in two parts, the part F being dropped from the face about midway of the surrounding iianges, as seen in Fig. 4, which leaves a cavity or depression, G, in the face, and a side slot, H, between the plates. I is the knob or iin ger piece by which the bolt is raised. The slot- H is a little broader at its upper end than elsewhere, which admits the knob I. The bolt B is the arc of a circle, placed, when in the plate A, with its back resting against the edge of the sunken plate F, as seen in Fig. 2. J is a lug on the other side of the bolt, cast on the plate A, which acts, in connection with the iiange G, as a guide to the bolt. K is a small shoulder on the lug'- bolt, which strikes the lug when the bolt descends and stops its motion. L is an opening in the straight iiange of the plate A, which allows the end ofthe bolt to pass through, as seen in Fig. 1, into thimbles N, or holes in the window-casing, for fastening or holding the sash. From the poi sition seen in Fig. 2 the bolt drops by its own gravity when its end is opposite one of the thimbles N. The position of the bolt when the sash is locked is seen in Fig. l. The knob or iin ger piece I is a part of the bolt, and works through the slot H over the plate F, and rests on the edge or corner of the plate F at its base, as seen in Fig. 4.

I thus provide a sash-lock whose functional parts are not only concealed within the case to the usual extent, but the thumb piece of whose bolt is iush with the face of the case, so that no impediment can exist to sliding the upper sash past the lower. The lock is likewise more simple in construction, and hence cheaper in manufacture than others, since the guide and stop devices are cast in one piece with the main parts of the case. It is, furthermore, ornamental in appearance by virtue of its peculiar construction.

l. The case or plate A, provided with the plate F and lug J, cast in one piece therewith, and having the apertures H G, substantiallyas shown and described.

2. In combination with the elements ofthe above claim, the bolt B, provided with the thumb piece I, cast solid therewith, as speci- ROBERT R. BALL.

Witnesses: Y

GEO. W. MABEE, T. B. MosHER. i 

